Dumbbell Nebula M27 in Vulpecula
Scope: Celestron 9.25 Edge 235 mm at f/10, Location: Laguna Mountains, CA 8 June 2013 Camera: ST8300M
Exposure: 13 x 6 min (1x1 bin) exposure with UV/IR block, 10 x 9 min (1x1 bin) Hydrogen Alpha exposure, 8 x 3 min (2x2 bin) RGB exposures.
Processing: Data Collection - CCDSoft (as FITs). Calibrated, stacked (Sigma Combine), LRGB channel registration, central gradient removal, and color equalization - Astroart. Curves, Levels, LRGB combine and finishing - Photoshop. Color calibration using eXcalibrator. This image is a HaL-HaR-GB combine with Luminance layering - Final Image size is approximately 2400x1800.
North is up in this image. M27 is a frequently imaged and popular object for observation. This image uses a narrowband HA exposure to add contrast to the red hues. M27 is a Planetary Nebula in the constellation of Vulpecula. Its distance is not precisely known. Estimates range from 490 to 3,500 light years with 1,200 light years being the most accepted. This image replaces an earlier image that can be seen in the Archives here. Horizontal FOV is 26'
Image center is approximately - Equatorial 2000: RA: 19h 59m 36s Dec: +22°43'00"
All images and content remain the property of Jim Thommes - copyright 2003 - 2013
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